3. Integrated analysis of spatial and attribute data - RTC, Regional ...
3. Integrated analysis of spatial and attribute data - RTC, Regional ...
3. Integrated analysis of spatial and attribute data - RTC, Regional ...
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2. Maintenance <strong>and</strong> <strong>analysis</strong> <strong>of</strong> <strong>attribute</strong> <strong>data</strong>This group <strong>of</strong> functions is used to edit, check, <strong>and</strong> analyze the non-<strong>spatial</strong><strong>attribute</strong> <strong>data</strong>Attribute editing functions - allow <strong>attribute</strong>s to be retrieved, examined <strong>and</strong>changed.Can add new <strong>attribute</strong>s <strong>and</strong> delete old ones.Attribute query functions - retrieve records in the <strong>attribute</strong> <strong>data</strong>baseaccording to a set <strong>of</strong> conditions specified by the operator (Aran<strong>of</strong>f, 1989).Forexample: <strong>attribute</strong>s <strong>of</strong> forest cover<strong>data</strong> stored in two tables can queried together togenerate a report <strong>of</strong> the total area <strong>of</strong> forest more than 30 years old.59